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CIL p1556

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Old Jan 31, 2021 | 08:58 AM
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CIL p1556

I have a 2013 6.7 power strock that has be deleted. Im getting a P1556 tc. #6 injector/ circuit performance. I have checked the circuit and replaced the injector bu still have the cil. Maybe the ecm is not performing like it should? The truck runs good with no issues. any ideas?
 
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Old Jan 31, 2021 | 01:42 PM
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did you program the new injector into the pcm?
 
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Old Jan 31, 2021 | 02:22 PM
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no, is it that critical? It was giving the code before I changed it and it was intermitent.
 
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Old Jan 31, 2021 | 03:09 PM
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From: Frederick, MD
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it may be a contributing factor. Have to reset the tell the pcm the new values.
 
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Old Jan 31, 2021 | 03:31 PM
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Yes, the trim codes have to be updated anytime an injector is changed.
 
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